The weapons are all balanced fairly well, and would be useful in many a situation.
Yep, all new weapons suck. I see no situation in which they could be useful.
You've never played or watched competitive, have you?
Nope. Enlighten me.
ok, ill bite.
1: sollis rocket launcher is potentially a wrecking machine, 3 rockets at once will just brutalize the opposition if used right, in comp anything that lets you oneshot a med is huge.
2: the scout pistol is rather huge if only for the +15% health (does that mean +15 hp or +15%?) scout in a pros hands is one of the most powerful classes in the game and a good scout will pretty much never let a pyro get into flamethrower range, +15 is a noticeable advantage to a good scout and in comp, any advantage needs to be seized and kicked to death so it cant run away. The shottie is a little differnt, but the accuracy bonus makes it interesting, not being able to jump with it probably makes it fairly useless for comp, but again, the scout is powerful, depending on how the accuracy bonus vs the damage nerf plays out, it may be a 'sniping' wep.
3. The snipers stuff is differnt, the smg isnt really useful comp, 'mini heavy' style play is generally a waste of a sniper, but it looks like alot of fun for pub, 20 shots in the clip isnt alot, shall be interesting to see how it plays. I play alot of highlander against some reasonable teams (for my country) and to be a sniper in one of these teams you need to be a freaking beast. Headshotting sticky jumping demos, h/s scouts from 1m away while they are jumping about, for eg, in my last game I watched our sniper wipe almost 1/2 the enemy team in the time it took him to reload and fire 4 times BANG 'med down' BANG 'solli down' BANG 'scout down' BANG 'demo down'. The effectiveness on the focus on this gun will be pretty dependant on if the no unscope thing changes reload times, that can be all that holds some of these guys back when they get on a roll, again, it will really depend on how it is to play with, tbh there are alot of things im unsure about in terms of that gun.
Pyro flare will depend on if you can rocket jump with it and what sort of damage bonus it gets on burning players, but tbh i think -50% damage is too much to make it more than a toy.
And yeah; THERE WILL BE MORE WEPS, THERE ALWAYS IS.